05000317/LER-1978-023-03, /03L-0 on 780906:failure of Containment Atmosphere Particulate Monitor Due to Moisture from Condensation & Some Corrosion;Caused by High Ambient Containment Humidity & Subsequent Condensation Inside Detector Pig

/03L-0 on 780906:failure of Containment Atmosphere Particulate Monitor Due to Moisture from Condensation & Some Corrosion;Caused by High Ambient Containment Humidity & Subsequent Condensation Inside Detector Pig

ML20027A111
Person / Time
Site:	Calvert Cliffs
Issue date:	10/06/1978
From:	Carroll J, Mjernicki M BALTIMORE GAS & ELECTRIC CO.
To:
Shared Package
ML20027A110	List: 05000317/LER-1978-023, Forwards LER 78-023/03L-0 05000317/LER-1978-023-03, /03L-0 on 780906:failure of Containment Atmosphere Particulate Monitor Due to Moisture from Condensation & Some Corrosion;Caused by High Ambient Containment Humidity & Subsequent Condensation Inside Detector Pig
References
LER-78-023-03L-01, LER-78-23-3L-1, NUDOCS 7810110174
Download: ML20027A111 (1)

LER-1978-023, /03L-0 on 780906:failure of Containment Atmosphere Particulate Monitor Due to Moisture from Condensation & Some Corrosion;Caused by High Ambient Containment Humidity & Subsequent Condensation Inside Detector Pig

Event date:
Report date:
3171978023R03 - NRC Website

text

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n tytC FC U.S. NUCLEAR REGULATORY COMMISSION w-77) Q LICENSEE EVENT REPORT o

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60 61 DOCK ET NU'MB E R 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES O'o 1012 l l During normal operation the Control Econ Operator discovered the'contain-l

, o ; 3, l nent atmosphere particulate nonitor failed lov at 0800. Corrective l

goy,,; [ action was taken innediately and the conitor was returned to service at l

g;3y;'1025 The containment atmosphere gaseous activity monitor and sump l

5ois;j alarm systens remained operable throughout this event. This is not a l

go;7; j repetitive occurrence.

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lt l 0 l l Discovered moisture and core 'corrosien on scintillation tube and tube l

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,i i3; l pig. Tube and socket were cleaned, tube reconnected, and carticulate Jl ji ;4l l detector returned to service. No further corrective acticn necessary.

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